In a trial, 50% of the control group and 30% of the treated group had the event. What is the number needed to treat?
Answer and explanation
Correct answer: D.
- Step 1: Absolute risk reduction .
- Step 2: NNT .
Answer
.
Why not the others: : The absolute risk reduction in percent was given. : Only the treated group's risk was used. : The relative risk was given.
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